Question

要解释我想做什么有点困难，但我会尝试清楚地表达。我想在文件中查找字符串（url）并将其与其他字符串（在我的代码中命名为＆＃39; services＆＃39;）进行比较，它实际上需要将所有服务与整个文件进行比较如果文件中的网址不包含服务，请使用该网址执行操作（从文件中删除该额外网址）。我的代码如下，但它没有给我正确的结果。我认为我的for循环有问题。

def search_service():
   status='Y'
   services = subprocess.Popen("docker-cloud service ps | awk '{print $1}'", shell=True, stdout=subprocess.PIPE)
   for line in iter(services.stdout.readline, ''):
       line=line.replace("\n","")
       with open('nginx.conf') as f:
           for word in f:
              if 'proxy_pass' in word:
                   st=word
           if re.search(line,st):
              status='Y'
           else:
              status='N'
              new=st
   if 'N' in status:
      print(st)           
      #remove_block(st)

我的DockerCloud输出服务示例：

dev-qwerty
test-asdfgh

nginx.conf：

server {
       listen      80;
       server_name     asdfgh-test.example.com;
       location / {
          proxy_pass         http://test-asdfgh-example.io:5002/;
          proxy_redirect     off;

          ##proxy_set_header   Host             $host;
          blah
       }
}

 server {
       listen      80;
       server_name     nginx-dev.example.com;
       location / {
          proxy_pass         http://dev-nginx-example.io:5002/;
          proxy_redirect     off;

          ##proxy_set_header   Host             $host;
          blah
       }
}

server {
       listen      80;
       server_name     qwerty-dev.example.com;
       location / {
          proxy_pass         http://dev-qwerty.io:5106/;
          proxy_redirect     off;

          ##proxy_set_header   Host             $host;
          blah
       }
}

预期输出是要找出：

proxy_pass         http://dev-nginx-example.io:5002/;

任何帮助都将不胜感激。

Answer 1

我不完全确定我已经理解了你所问的内容，但这是否符合这些要求？

dummy_input_file = 'dummy_file.in' 

with open(dummy_input_file, 'w') as out_file:
    out_file.write("""\
string1
string2
string3""")

expected_sub_strings = ['ing2', 'ing3']

modified_file_name = 'modified_file.out'
with open(dummy_input_file, 'r') as in_file, open(modified_file_name, 'w') as out_file:
    for line in in_file:
        if any(s in line for s in expected_sub_strings):
            out_file.write(line)

with open(modified_file_name, 'r') as in_file:
    print(in_file.read())

打印：

string2
string3

Answer 2

您的代码非常复杂，这也是一样的，并且更容易阅读：

def search_service():
    services = subprocess.Popen("docker-cloud service ps | awk '{print $1}'", shell=True, stdout=subprocess.PIPE)
    docker_services = []
    for line in iter(services.stdout.readline, ''):
        line=line.replace("\n","")
        docker_services.append(line)

    with open('nginx.conf') as f:
       for word in f:
            if 'proxy_pass' in word:
                unknown = True
                for service in docker_services:
                    if service in word:
                        unknown = False
                        break

                if unknown:
                    print(word.strip())

获取以文件中的特定字符串开头的行，并将其与python中的其他字符串进行比较

2 个答案: